1. Solar charging board & USB Charging. 2. Real-time automatic high-precision monitoring of the temperature and pressure of 4 tires. 3. Wireless connect by sensors, easy install 4. Car TPMS LCD Display can be adjusted up and down 45 degrees, or left and right 45 degrees. 5. According to your personal preference, it can be pasted on the windshield or placed on the center console. Receiving frequency: 433.92MHz Power supply mode:USB power supply, Solar power supply Working voltage:DC 5V - 12V input Pressure unit:bar / psi Temperature unit:Celsius /Fahrenheit Built-in battery: 400Amh Operating temperature:-20 -- 85Celsius Storage temperature:-40 -- 125Celsius Colour:black Material:plastic Package Contents: 1 x Receiver 4 x Internal Sensor Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.